I love Lubitsch! I love this movie! I love Miriam Hopkins! I love Gary Cooper. I love Frederic March too.
I wish it were really the three of them doing Noel Coward's play, but, unfortunately, Ben Hecht removed pretty much all of Coward's dialogue. Coward himself quipped that "Only three of my original lines are left in the film, including 'Pass the mustard.’"
Nevertheless, Hecht's dialogue is pretty witty, and the movie is surprisingly sexy and homoerotic. It's a perfect example of the "Lubitsch Touch"--although I prefer Lubitsch's Design for Living, which I rate as my all-time favorite movie.
Ernst Lubitsch, Gary Cooper. Miriam Hopkins, Frederic March